Nehemiah 2:16

Now the watchmen did not know why I went nor what I was doing; for I had not yet told the Jews, nor the priests, nor the nobles, nor the officers of the army, nor the rest who were to do the work.

And the sentinels knew not why I went, nor what I was doing; and until that time I told it not to the Jews, or to the priests, or to the nobles, or to the captains, or to the rest of the men who wrought the works.